US20100328940A1 - Lens, led module and illumination apparatus utilizing the same - Google Patents
Lens, led module and illumination apparatus utilizing the same Download PDFInfo
- Publication number
- US20100328940A1 US20100328940A1 US12/553,079 US55307909A US2010328940A1 US 20100328940 A1 US20100328940 A1 US 20100328940A1 US 55307909 A US55307909 A US 55307909A US 2010328940 A1 US2010328940 A1 US 2010328940A1
- Authority
- US
- United States
- Prior art keywords
- light
- face
- light output
- led
- lens
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000005286 illumination Methods 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims description 11
- 239000008393 encapsulating agent Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 claims 2
- 239000000463 material Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
- F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
Definitions
- the present disclosure relates generally to lighting systems and, more particularly, to an illumination apparatus utilizing light emitting diodes (LEDs) as light sources.
- LEDs light emitting diodes
- LED as a new type of light source can generate brighter light, and have many advantages, e.g., energy saving, environment friendly and longer life-span, compared to conventional light sources. Therefore, the LED has a trend of substituting for conventional light source.
- FIG. 1 is an isometric, assembled view of an LED module in accordance with an embodiment of the disclosure.
- FIG. 2 is an isometric, inverted view of the LED module of FIG. 1 , wherein an LED is removed therefrom.
- FIG. 3 is a cross-sectional view of the LED module of FIG. 1 , taken along line III-III thereof.
- FIG. 4 is a cross-sectional view of the LED module of FIG. 1 , taken along line IV-IV thereof.
- FIG. 5 shows an equal illumination intensity distribution of the LED module simulated by a computer software.
- FIG. 6 shows a plurality of LED modules integrated together.
- FIG. 7 shows a street lamp applying the integrated LED modules of FIG. 6 .
- an LED module 30 in accordance with an embodiment of the disclosure includes an LED 10 and a lens 20 covering the LED 10 .
- the LED 10 includes a base 12 , an LED chip 14 mounted on a top face of the base 12 and a transparent encapsulant 16 sealing the LED chip 14 and fixed on the top face of the base 12 .
- the encapsulant 16 is substantially hemispherical. Light emitted from the LED chip 14 passes through the encapsulant 16 when the LED chip 14 is energized.
- the LED 10 has an optical axis A.
- the lens 20 is integrally made from a transparent material with good optical property, such as PMMA or PC.
- the lens 20 has a light input face (not labeled) and a light output face 21 .
- the light output face 21 can refract the light from the light input face and includes a first light output face 22 continuously distributed from a center to a periphery thereof and four second light output faces 24 inwardly recessed relative to the first light output face 22 .
- the light output face 21 has an optical axis B which is coincident with the optical axis A of the LED 10 (shown in FIG. 3 ).
- the four second light output faces 24 space from each other with the same interval and are away from the optical axis B of the light output face 21 , and are symmetrical about the optical axis B, thereby making the first light output face 22 substantially be a crisscross in shape.
- Each second light output face 24 is a concaved ellipsoid face; the ellipsoid face can deflect light extending therethrough toward the first light output face 22 adjacent thereto (referring to arrow b shown in FIG. 4 ), thus making an area on which the entire LED module 30 illuminates be in a crisscross shape.
- the second light output face 24 can be other inwardly-depressed curved face, such as a curved face consisting of two intersecting planes, as long as light extending through the second light output face 24 can be deflected toward the first light output face 22 adjacent thereto.
- the lens 20 inwardly defines a step-shaped groove 26 in a center of a bottom thereof for receiving the base 12 of the LED 10 therein.
- a hemispherical cavity 28 is further inwardly defined in a center of the groove 26 for receiving the encapsulant 16 of the LED 10 therein.
- a face of the cavity 28 is a spheric face and acts as the light input face for the light produced by the LED 10 entering into the lens 20 .
- the face of the cavity 28 has an optical axis C which is coincident with the optical axis A and the optical axis B.
- the face of the cavity 28 can be an aspheric face in an alternative embodiment.
- FIG. 5 shows an equal illumination intensity distribution of the LED module 30 simulated by a computer software.
- An obvious crisscross trace shown in FIG. 5 indicates that the light from the LED module 30 is mostly focused on the crisscross area.
- a plurality of such LED modules 30 can be integrated on a frame 40 (shown in FIG. 6 ) to intensify luminous intensity of the light from the LED modules 30 .
- the first light output faces 22 of the lenses 20 can converge the light extending therethrough toward the crossing (referring to arrows a shown in FIG. 4 ).
- the second light output faces 24 of the lenses 20 can also direct the light extending therethrough toward the crossing (referring to arrows b shown in FIG. 4 ).
- the light from the LED modules 30 is focused over the crossing to form an intersecting illumination area 70 , whereby the crossing can be optimally illuminated in a focused manner, without waste of the light generated by the street lamp 50 .
- the second light output faces 24 in combination with the first light output face 22 of the lens 20 of the LED module 30 can refract the light from the LED 10 toward the predefined area where illumination is needed, whereby utilization efficiency of the LED light source is thus enhanced effectively.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Abstract
Description
- 1. Technical Field
- The present disclosure relates generally to lighting systems and, more particularly, to an illumination apparatus utilizing light emitting diodes (LEDs) as light sources.
- 2. Description of Related Art
- LED as a new type of light source can generate brighter light, and have many advantages, e.g., energy saving, environment friendly and longer life-span, compared to conventional light sources. Therefore, the LED has a trend of substituting for conventional light source.
- Nowadays one disadvantage of an illumination apparatus applying LEDs is the low utilization efficiency of light sources, in which a mount of light from the lamp always projects/illuminates an area should not be illuminated. Thus, a great deal electric energy is consumed unnecessarily.
- What is needed, therefore, is an illumination apparatus utilizing LED light sources which can overcome the limitations described.
- Many aspects of the present embodiments can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
-
FIG. 1 is an isometric, assembled view of an LED module in accordance with an embodiment of the disclosure. -
FIG. 2 is an isometric, inverted view of the LED module ofFIG. 1 , wherein an LED is removed therefrom. -
FIG. 3 is a cross-sectional view of the LED module ofFIG. 1 , taken along line III-III thereof. -
FIG. 4 is a cross-sectional view of the LED module ofFIG. 1 , taken along line IV-IV thereof. -
FIG. 5 shows an equal illumination intensity distribution of the LED module simulated by a computer software. -
FIG. 6 shows a plurality of LED modules integrated together. -
FIG. 7 shows a street lamp applying the integrated LED modules ofFIG. 6 . - Referring to
FIG. 1 andFIG. 3 , anLED module 30 in accordance with an embodiment of the disclosure includes anLED 10 and alens 20 covering theLED 10. TheLED 10 includes abase 12, anLED chip 14 mounted on a top face of thebase 12 and atransparent encapsulant 16 sealing theLED chip 14 and fixed on the top face of thebase 12. The encapsulant 16 is substantially hemispherical. Light emitted from theLED chip 14 passes through theencapsulant 16 when theLED chip 14 is energized. TheLED 10 has an optical axis A. - Also referring to
FIG. 2 andFIG. 4 , thelens 20 is integrally made from a transparent material with good optical property, such as PMMA or PC. Thelens 20 has a light input face (not labeled) and alight output face 21. Thelight output face 21 can refract the light from the light input face and includes a firstlight output face 22 continuously distributed from a center to a periphery thereof and four second light output faces 24 inwardly recessed relative to the firstlight output face 22. Thelight output face 21 has an optical axis B which is coincident with the optical axis A of the LED 10 (shown inFIG. 3 ). The four second light output faces 24 space from each other with the same interval and are away from the optical axis B of thelight output face 21, and are symmetrical about the optical axis B, thereby making the firstlight output face 22 substantially be a crisscross in shape. Each secondlight output face 24 is a concaved ellipsoid face; the ellipsoid face can deflect light extending therethrough toward the firstlight output face 22 adjacent thereto (referring to arrow b shown inFIG. 4 ), thus making an area on which theentire LED module 30 illuminates be in a crisscross shape. It is noted that the secondlight output face 24 can be other inwardly-depressed curved face, such as a curved face consisting of two intersecting planes, as long as light extending through the secondlight output face 24 can be deflected toward the firstlight output face 22 adjacent thereto. - Particularly referring to
FIG. 2 andFIG. 3 , thelens 20 inwardly defines a step-shapedgroove 26 in a center of a bottom thereof for receiving thebase 12 of theLED 10 therein. Ahemispherical cavity 28 is further inwardly defined in a center of thegroove 26 for receiving theencapsulant 16 of theLED 10 therein. A face of thecavity 28 is a spheric face and acts as the light input face for the light produced by theLED 10 entering into thelens 20. The face of thecavity 28 has an optical axis C which is coincident with the optical axis A and the optical axis B. The face of thecavity 28 can be an aspheric face in an alternative embodiment. -
FIG. 5 shows an equal illumination intensity distribution of theLED module 30 simulated by a computer software. An obvious crisscross trace shown inFIG. 5 indicates that the light from theLED module 30 is mostly focused on the crisscross area. - It is noted that a plurality of
such LED modules 30 can be integrated on a frame 40 (shown inFIG. 6 ) to intensify luminous intensity of the light from theLED modules 30. - Also referring to
FIG. 7 , when astreet lamp 50 applying theLED modules 30 is mounted by a crossing of tworoads 60, the first light output faces 22 of thelenses 20 can converge the light extending therethrough toward the crossing (referring to arrows a shown inFIG. 4 ). The second light output faces 24 of thelenses 20 can also direct the light extending therethrough toward the crossing (referring to arrows b shown inFIG. 4 ). Thus, the light from theLED modules 30 is focused over the crossing to form an intersectingillumination area 70, whereby the crossing can be optimally illuminated in a focused manner, without waste of the light generated by thestreet lamp 50. - In the disclosure, the second light output faces 24 in combination with the first
light output face 22 of thelens 20 of theLED module 30 can refract the light from theLED 10 toward the predefined area where illumination is needed, whereby utilization efficiency of the LED light source is thus enhanced effectively. - It is believed that the disclosure and its advantages will be understood from the foregoing description, and it will be apparent that various changes may be made thereto without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the examples hereinbefore described merely being preferred or exemplary embodiments of the invention.
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200910303898.9 | 2009-06-30 | ||
CN2009103038989A CN101936502A (en) | 2009-06-30 | 2009-06-30 | Lens, LED module as well as illumination device applied by same |
Publications (1)
Publication Number | Publication Date |
---|---|
US20100328940A1 true US20100328940A1 (en) | 2010-12-30 |
Family
ID=43380510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/553,079 Abandoned US20100328940A1 (en) | 2009-06-30 | 2009-09-02 | Lens, led module and illumination apparatus utilizing the same |
Country Status (2)
Country | Link |
---|---|
US (1) | US20100328940A1 (en) |
CN (1) | CN101936502A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100302785A1 (en) * | 2009-05-31 | 2010-12-02 | Byd Company Limited | Led lens and assembly |
US20120281420A1 (en) * | 2010-10-26 | 2012-11-08 | Panasonic Corporation | Combined optical element and lighting device including the same |
US20140355305A1 (en) * | 2013-05-28 | 2014-12-04 | Mitsubishi Electric Corporation | Point light source, planar light source device, and display device |
US20150211690A1 (en) * | 2014-01-27 | 2015-07-30 | Formosa Epitaxy Incorporation | Light source device |
US20150369454A1 (en) * | 2013-02-14 | 2015-12-24 | Lg Electronics Inc | Display apparatus |
US9858772B2 (en) | 2015-09-30 | 2018-01-02 | Siemens Schweiz Ag | Lens, light-emitting device having the lens, and visual notification appliance |
US9991956B2 (en) | 2013-11-25 | 2018-06-05 | Abl Ip Holding Llc | System and method for communication with a mobile device via a positioning system including RF communication devices and modulated beacon light sources |
US10291321B2 (en) | 2011-07-26 | 2019-05-14 | Abl Ip Holding Llc | Self-identifying one-way authentication method using optical signals |
US10302734B2 (en) | 2011-07-26 | 2019-05-28 | Abl Ip Holding Llc | Independent beacon based light position system |
Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2161872A (en) * | 1937-01-25 | 1939-06-13 | Wilhelm Ernst Reeser | Electrical pocket writing and reading lamp |
US2544378A (en) * | 1947-04-15 | 1951-03-06 | Cyrille A Cyr | Fog filter for headlights |
US3694692A (en) * | 1971-06-24 | 1972-09-26 | Current Ind Inc | Mercury vapor lamp with auxiliary light source |
US4944584A (en) * | 1986-06-14 | 1990-07-31 | Nippon Sheet Glass Co., Ltd. | Plastic multifocal point spherical lens |
US5223862A (en) * | 1991-04-08 | 1993-06-29 | Corning Incorporated | High-index, organic lens member |
US5823662A (en) * | 1994-08-25 | 1998-10-20 | Lightware, Inc. | High efficiency illumination system |
USD423130S (en) * | 1998-04-20 | 2000-04-18 | Chi Hung Kung | Booklight |
US7021760B2 (en) * | 2001-01-31 | 2006-04-04 | Clearlab Pte Ltd. | Soft contact lens capable of engagement with an eye either right way out or inside out |
US20060203353A1 (en) * | 2005-03-08 | 2006-09-14 | Se-Ki Park | Lens for light emitting diode, back light assembly having the same, and liquid crystal display having the assembly |
US20070044360A1 (en) * | 2005-09-01 | 2007-03-01 | Hillis W D | Magnetic planning board with stackable, snap-to-grid, self-aligning items |
US20080101063A1 (en) * | 2006-10-27 | 2008-05-01 | Teruo Koike | LED Lighting Fixture |
US20090040769A1 (en) * | 2007-08-11 | 2009-02-12 | Inteled Corporation | Free-Form Lenses for Rectangular Illumination Zones |
US20090067175A1 (en) * | 2007-01-04 | 2009-03-12 | Bright Led Electronics Corp. | Lens for use with a light-emitting element and light source device including the lens |
US20090109667A1 (en) * | 2007-10-31 | 2009-04-30 | Foxsemicon Integrated Technology, Inc. | Optical lens and illuminating device incorporating the same |
US20090267909A1 (en) * | 2008-04-27 | 2009-10-29 | Htc Corporation | Electronic device and user interface display method thereof |
-
2009
- 2009-06-30 CN CN2009103038989A patent/CN101936502A/en active Pending
- 2009-09-02 US US12/553,079 patent/US20100328940A1/en not_active Abandoned
Patent Citations (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2161872A (en) * | 1937-01-25 | 1939-06-13 | Wilhelm Ernst Reeser | Electrical pocket writing and reading lamp |
US2544378A (en) * | 1947-04-15 | 1951-03-06 | Cyrille A Cyr | Fog filter for headlights |
US3694692A (en) * | 1971-06-24 | 1972-09-26 | Current Ind Inc | Mercury vapor lamp with auxiliary light source |
US4944584A (en) * | 1986-06-14 | 1990-07-31 | Nippon Sheet Glass Co., Ltd. | Plastic multifocal point spherical lens |
US5223862A (en) * | 1991-04-08 | 1993-06-29 | Corning Incorporated | High-index, organic lens member |
US5823662A (en) * | 1994-08-25 | 1998-10-20 | Lightware, Inc. | High efficiency illumination system |
USD423130S (en) * | 1998-04-20 | 2000-04-18 | Chi Hung Kung | Booklight |
US7021760B2 (en) * | 2001-01-31 | 2006-04-04 | Clearlab Pte Ltd. | Soft contact lens capable of engagement with an eye either right way out or inside out |
US20060203353A1 (en) * | 2005-03-08 | 2006-09-14 | Se-Ki Park | Lens for light emitting diode, back light assembly having the same, and liquid crystal display having the assembly |
US20070044360A1 (en) * | 2005-09-01 | 2007-03-01 | Hillis W D | Magnetic planning board with stackable, snap-to-grid, self-aligning items |
US20080101063A1 (en) * | 2006-10-27 | 2008-05-01 | Teruo Koike | LED Lighting Fixture |
US20090067175A1 (en) * | 2007-01-04 | 2009-03-12 | Bright Led Electronics Corp. | Lens for use with a light-emitting element and light source device including the lens |
US20090040769A1 (en) * | 2007-08-11 | 2009-02-12 | Inteled Corporation | Free-Form Lenses for Rectangular Illumination Zones |
US20090109667A1 (en) * | 2007-10-31 | 2009-04-30 | Foxsemicon Integrated Technology, Inc. | Optical lens and illuminating device incorporating the same |
US20090267909A1 (en) * | 2008-04-27 | 2009-10-29 | Htc Corporation | Electronic device and user interface display method thereof |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100302785A1 (en) * | 2009-05-31 | 2010-12-02 | Byd Company Limited | Led lens and assembly |
US20120281420A1 (en) * | 2010-10-26 | 2012-11-08 | Panasonic Corporation | Combined optical element and lighting device including the same |
US10484092B2 (en) | 2011-07-26 | 2019-11-19 | Abl Ip Holding Llc | Modulating a light source in a light based positioning system with applied DC bias |
US10302734B2 (en) | 2011-07-26 | 2019-05-28 | Abl Ip Holding Llc | Independent beacon based light position system |
US10291321B2 (en) | 2011-07-26 | 2019-05-14 | Abl Ip Holding Llc | Self-identifying one-way authentication method using optical signals |
US10151448B2 (en) | 2013-02-14 | 2018-12-11 | Lg Electronics Inc. | Display apparatus |
US20150369454A1 (en) * | 2013-02-14 | 2015-12-24 | Lg Electronics Inc | Display apparatus |
US9829180B2 (en) * | 2013-02-14 | 2017-11-28 | Lg Electronics Inc. | Display apparatus |
US20140355305A1 (en) * | 2013-05-28 | 2014-12-04 | Mitsubishi Electric Corporation | Point light source, planar light source device, and display device |
US9638852B2 (en) * | 2013-05-28 | 2017-05-02 | Mitsubishi Electric Corporation | Point light source, planar light source device, and display device |
US10230466B2 (en) | 2013-11-25 | 2019-03-12 | Abl Ip Holding Llc | System and method for communication with a mobile device via a positioning system including RF communication devices and modulated beacon light sources |
US10003401B2 (en) | 2013-11-25 | 2018-06-19 | Abl Ip Holding Llc | System and method for communication with a mobile device via a positioning system including RF communication devices and modulated beacon light sources |
US9991956B2 (en) | 2013-11-25 | 2018-06-05 | Abl Ip Holding Llc | System and method for communication with a mobile device via a positioning system including RF communication devices and modulated beacon light sources |
US9371975B2 (en) * | 2014-01-27 | 2016-06-21 | Formosa Epitaxy Incorporation | Light source device |
US20150211690A1 (en) * | 2014-01-27 | 2015-07-30 | Formosa Epitaxy Incorporation | Light source device |
US9858772B2 (en) | 2015-09-30 | 2018-01-02 | Siemens Schweiz Ag | Lens, light-emitting device having the lens, and visual notification appliance |
Also Published As
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CN101936502A (en) | 2011-01-05 |
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Legal Events
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AS | Assignment |
Owner name: FOXCONN TECHNOLOGY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HUANG, XING-GUI;ZHANG, HAI-WEI;REEL/FRAME:023186/0400 Effective date: 20090731 Owner name: FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HUANG, XING-GUI;ZHANG, HAI-WEI;REEL/FRAME:023186/0400 Effective date: 20090731 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |